Julia Panek

Dear Zayn: We Have A B'Day Message From Your #1 -- Most Successful -- Fan

HBD from Anna Todd!

Dear Zayn Malik: It is your birthday! We certainly hope you are feeling 22, because that is how old you are today!

In honor of your coming into this world on January 12, two-times-eleven years ago, we asked Anna Todd, author of the "After" series (a.k.a. that super successful book-turned-soon-to-be-movie series based on her One Direction fan-fiction) to write you a birthday message.

Check it out below, and make sure to pick up "After," "After We Collided," "After We Fell" and "After Ever Happy" to see what happens to your alter-ego, Zed. He's a scientist and studies glow-in-the-dark flowers -- and you make our hearts bloom! Same diff.